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Close stderr of child processes on MacOS

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This fixes a bug on some modern mac systems. Related to
setup_logging() changing stderr to use ASL and write to com.apple.console.

When a forked application writes to stderr while ASL is used,
the child is terminated for some reason.
This commit is contained in:
Robin Gareus 2019-03-05 19:11:10 +01:00
parent a390d8d3ca
commit 8b5437301b
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GPG key ID: A090BCE02CF57F04
1 changed files with 4 additions and 1 deletions
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5
libs/pbd/system_exec.cc
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@ -897,8 +897,11 @@ SystemExec::start (StdErrMode stderr_mode, const char *vfork_exec_wrapper)
} else if (stderr_mode == IgnoreAndClose) { } else if (stderr_mode == IgnoreAndClose) {
/* ignore STDERR */ /* ignore STDERR */
::close(STDERR_FILENO); ::close(STDERR_FILENO);
} else { } else { /* stderr_mode == ShareWithParent */
/* keep STDERR */ /* keep STDERR */
#if defined __APPLE__&& defined ASL_LOG_DESCRIPTOR_WRITE
::close(STDERR_FILENO);
#endif
} }
if (pout[1] != STDOUT_FILENO && pout[1] != STDERR_FILENO) { if (pout[1] != STDOUT_FILENO && pout[1] != STDERR_FILENO) {